﻿//*****************************************************************************
//
//	Copyright 2015 Microsoft Corporation
//
//	Licensed under the Apache License, Version 2.0 (the "License");
//	you may not use this file except in compliance with the License.
//	You may obtain a copy of the License at
//
//	http ://www.apache.org/licenses/LICENSE-2.0
//
//	Unless required by applicable law or agreed to in writing, software
//	distributed under the License is distributed on an "AS IS" BASIS,
//	WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//	See the License for the specific language governing permissions and
//	limitations under the License.
//
//*****************************************************************************

//
// App.xaml.cpp
// Implementation of the App class.
//

#include "pch.h"
#include "MainPage.xaml.h"

using namespace MediaPlayerCPP;

using namespace Platform;
using namespace Windows::ApplicationModel;
using namespace Windows::ApplicationModel::Activation;
using namespace Windows::Foundation;
using namespace Windows::Foundation::Collections;
using namespace Windows::UI::Xaml::Media::Animation;
using namespace Windows::UI::Xaml;
using namespace Windows::UI::Xaml::Controls;
using namespace Windows::UI::Xaml::Controls::Primitives;
using namespace Windows::UI::Xaml::Data;
using namespace Windows::UI::Xaml::Input;
using namespace Windows::UI::Xaml::Interop;
using namespace Windows::UI::Xaml::Media;
using namespace Windows::UI::Xaml::Navigation;

// The Blank Application template is documented at http://go.microsoft.com/fwlink/?LinkId=234227

/// <summary>
/// Initializes the singleton application object. This is the first line of authored code
/// executed, and as such is the logical equivalent of main() or WinMain().
/// </summary>
App::App()
{
	InitializeComponent();
	Suspending += ref new SuspendingEventHandler(this, &App::OnSuspending);

	FFmpegInterop::FFmpegInteropLogging::SetLogLevel(FFmpegInterop::LogLevel::Info);
	FFmpegInterop::FFmpegInteropLogging::SetLogProvider(this);
}

void App::Log(FFmpegInterop::LogLevel level, String^ message)
{
	OutputDebugString(message->Data());
}

/// <summary>
/// Invoked when the application is launched normally by the end user. Other entry points
/// will be used when the application is launched to open a specific file, to display
/// search results, and so forth.
/// </summary>
/// <param name="e">Details about the launch request and process.</param>
void App::OnLaunched(LaunchActivatedEventArgs^ e)
{
#if _DEBUG
	if (IsDebuggerPresent())
	{
		DebugSettings->EnableFrameRateCounter = true;
	}
#endif

	auto rootFrame = dynamic_cast<Frame^>(Window::Current->Content);

	// Do not repeat app initialization when the Window already has content,
	// just ensure that the window is active.
	if (rootFrame == nullptr)
	{
		// Create a Frame to act as the navigation context and associate it with
		// a SuspensionManager key
		rootFrame = ref new Frame();

		// TODO: Change this value to a cache size that is appropriate for your application.
		rootFrame->CacheSize = 1;

		if (e->PreviousExecutionState == ApplicationExecutionState::Terminated)
		{
			// TODO: Restore the saved session state only when appropriate, scheduling the
			// final launch steps after the restore is complete.
		}

		// Place the frame in the current Window
		Window::Current->Content = rootFrame;
	}

	if (rootFrame->Content == nullptr)
	{
#if WINAPI_FAMILY==WINAPI_FAMILY_PHONE_APP
		// Removes the turnstile navigation for startup.
		if (rootFrame->ContentTransitions != nullptr)
		{
			_transitions = ref new TransitionCollection();
			for (auto transition : rootFrame->ContentTransitions)
			{
				_transitions->Append(transition);
			}
		}

		rootFrame->ContentTransitions = nullptr;
		_firstNavigatedToken = rootFrame->Navigated += ref new NavigatedEventHandler(this, &App::RootFrame_FirstNavigated);
#endif

		// When the navigation stack isn't restored navigate to the first page,
		// configuring the new page by passing required information as a navigation
		// parameter.
		if (!rootFrame->Navigate(MainPage::typeid, e->Arguments))
		{
			throw ref new FailureException("Failed to create initial page");
		}
	}

	// Ensure the current window is active
	Window::Current->Activate();
}

#if WINAPI_FAMILY==WINAPI_FAMILY_PHONE_APP
/// <summary>
/// Restores the content transitions after the app has launched.
/// </summary>
void App::RootFrame_FirstNavigated(Object^ sender, NavigationEventArgs^ e)
{
	auto rootFrame = safe_cast<Frame^>(sender);

	TransitionCollection^ newTransitions;
	if (_transitions == nullptr)
	{
		newTransitions = ref new TransitionCollection();
		newTransitions->Append(ref new NavigationThemeTransition());
	}
	else
	{
		newTransitions = _transitions;
	}

	rootFrame->ContentTransitions = newTransitions;

	rootFrame->Navigated -= _firstNavigatedToken;
}

/// <summary>
/// Handle OnActivated event to deal with File Open/Save continuation activation kinds
/// </summary>
/// <param name="e">Application activated event arguments, it can be casted to proper sub-type based on ActivationKind</param>
void App::OnActivated(IActivatedEventArgs^ e)
{
	Application::OnActivated(e);

	auto continuationEventArgs = dynamic_cast<IContinuationActivatedEventArgs^>(e);
	auto mainPage = dynamic_cast<MainPage^>(dynamic_cast<Frame^>(Window::Current->Content)->Content);

	if (continuationEventArgs != nullptr && mainPage != nullptr)
	{
		mainPage->ContinueFileOpenPicker(dynamic_cast<FileOpenPickerContinuationEventArgs^>(continuationEventArgs));
	}
}
#endif

/// <summary>
/// Invoked when application execution is being suspended. Application state is saved
/// without knowing whether the application will be terminated or resumed with the contents
/// of memory still intact.
/// </summary>
void App::OnSuspending(Object^ sender, SuspendingEventArgs^ e)
{
	(void) sender;	// Unused parameter
	(void) e;		// Unused parameter

	// TODO: Save application state and stop any background activity
}